Starting power supply



FIG. 1 is a front view of a starting power supply in accordance with our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front, top, and right side perspective view thereof. 

CLAIM The ornamental design for a starting power supply, as shown. 